ABSTRACT

The achievement of frictionless systems, known as superlubricity, has become of great importance concerning energy saving and emission reduction. In parallel, the drive toward sustainability and environmental aspects has led to intense advances in the research and development of biobased materials. From the standpoint of Green Chemistry principles, this review presents a critical overview of the latest findings and future perspectives on the application of biobased materials aiming at superlubricant pursuits. The progress in the use of biomacromolecules, such as chitosan, cellulose, and lignin, as additives to lubricants or coating materials, are addressed, as well as the advances on sustainable coatings based on diamond-like carbon (DLC). Deeper investigations on the development of non-hazardous processes dedicated to the tribological properties of DLC, such as electrochemical synthesis using environment-friendly solvents to generate molecular precursors, widen the perspectives to achieve sustainable materials. Besides, the exploration of the tribochemical interactions between the DLC surface and lubricants containing biobased materials arises as a promising strategy to achieve green superlubricity as a viable and scalable process, through different pathways: by hydrogen bonds between lubricant and additives, via surface passivation of the functional groups present in these biomacromolecules or by biomimicking natural joints.

摘要

实现无摩擦系统，即所谓的超润滑性，在节约能源和减少排放方面已变得非常重要。同时，对可持续性和环境方面的追求导致了生物基材料研究与开发的巨大进步。从绿色化学的角度原理，本综述对针对超级润滑剂的生物基材料应用的最新发现和未来观点进行了重要的概述。讨论了使用生物大分子（如壳聚糖，纤维素和木质素）作为润滑剂或涂料的添加剂的进展，以及基于类金刚石碳（DLC）的可持续涂料的进展。对致力于DLC摩擦学特性的非危险过程的深入研究，例如使用环境友好的溶剂生成分子前体的电化学合成，拓宽了获得可持续材料的视野。除了，